Revert "Merge pull #793: Dev Docs: New Glossary & JS Search Box"

This reverts commit e3dcf0ce1f, reversing
changes made to c71e9fdf2d.

Once again we had a broken new plugin that Travis CI and local building
didn't catch.

_data/glossary/en/start-string.yaml

@@ -1,28 +0,0 @@
----
-# This file is licensed under the MIT License (MIT) available on
-# http://opensource.org/licenses/MIT.
-
-required:
-                                           #-------------40 characters-------------#
-    title_max_40_characters_no_formatting: Start String, Network Magic
-
-    summary_max_255_characters_no_formatting: >
-        Four defined bytes which start every message in the Bitcoin P2P
-        protocol to allow seeking to the next message.
-
-    synonyms_shown_in_glossary_capitalize_first_letter:
-        - Start string
-        - Network magic
-
-optional:
-    synonyms_and_pluralizations_not_shown_in_glossary:
-        - start strings
-        - magic
-
-    not_to_be_confused_with_capitalize_first_letter:
-
-    links_html_or_markdown_style_capitalize_first_letter:
-        - "[Start string](/en/developer-reference#term-start-string) --- Bitcoin.org Developer Reference"
-        - "[How was the start string chosen?](http://bitcoin.stackexchange.com/q/2337) --- Bitcoin StackExchange"
-
----